The shattaf is a source of water for people who prefer using water rather than other methods of cleansing after defecation or urination. The shattaf is a relatively modern replacement for the traditional sources of water for this action, such as the bidet, copper pot or bucket and mug, being more hygienic and compact. There is no contact between the spray of water and the used water drainage.
Shattaf in China is not very popular, people doesn't use to it commonly. But in European, it is very popular, such like in France, Germany, Italy and etc. In middle east, it is prefer to use for muslim wodo cleaning, it is very convenient and effectively.